I am downright shocked at just how much of a failure this technology has turned out to be. How can this many brilliant people work on an area for this long and produce almost nothing of value?
I suppose it happens in areas of "pathological science" like infinite energy machines, but those are areas where the tech doesn't work and probably violates laws of physics. In this case the tech does work in the general sense but seems to have little to no utility in most cases. When you consider scams and fraud it may even have negative utility.
I'd like to be proven wrong. I keep waiting for that killer cryptocurrency app but it never arrives. Meanwhile the core use case of digital money seems almost abandoned.
It's not even that good anymore for black and grey market commerce. It was in the beginning because the authorities didn't understand it. It was security through obscurity. Now they're developing both expertise and legal frameworks for dealing with it. It's no longer a free-for-all.
I have trouble thinking of another technology that actually works that has attracted this much hype, brains, and investment and then failed this badly to deliver.
It's not like fusion, which has a very clear use case but faces so far insurmountable technical challenges. It's not like nuclear fission power which works, has a clear use, but has downsides.
I think the nearest comparison I can come up with are failed government mega-projects like the US Reagan-era "Star Wars" laser missile defense system, airplane-like space shuttles, or giant planned utopian cities that get built and then sit vacant.
I'm also shocked and a little horrified at just how much fraud there is in this space. I'd expect some, but the sheer volume of fraud is breathtaking. Almost all ICOs seem to be scams. Many exchanges are likely scams. Tether looks like a scam. It makes me disappointed in humanity that there are this many bad actors out there just waiting for a new way to fleece people.
Just... wow. What a waste.